CN2151291Y

CN2151291Y - Protective connecting device for axial pump transmission draft

Info

Publication number: CN2151291Y
Application number: CN 92239449
Authority: CN
Inventors: 郝喜峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-29
Filing date: 1992-10-29
Publication date: 1993-12-29
Anticipated expiration: 2002-10-29

Abstract

The utility model relates to a protective connecting device for the power transmission shaft of a deep well pump. The utility model adopts a semicircular clamping hoop structure and uses an antirust screw to fasten the semicircular clamping hoop. Compared with the existing thread connection structure, the structure is much easier on aspects of installation and disassembly obviously. Besides, the utility model has labor saving. A fastening bolt has the anti-rust function, and thus, any hindrance can not exist in the bolt disassembly. The connecting device can not damage the intensity of the original protective pipe. Besides, the utility model has the advantages of reasonable stress structure, simple assembly and disassembly, labor saving, good intensity, high connecting reliability, etc. The utility model can prevent the pump losing phenomenon occurring.

Description

Protective connecting device for axial pump transmission draft

The utility model is a kind of protective connecting device of deep well water pump power transmission shaft.

What the protective connecting device of existing deep well water pump power transmission shaft generally adopted is that the thread bush tubular type connects.Referring to Fig. 3, this thread bush tubular type joiner is provided with an outer sleeve 12 at the joining place of two pillars 1,13, and this outer sleeve is fixed together two pillars by worm structure.The connection of deep well water pump power transmission shaft pillar must be constructed at the scene, and pump maintenance is frequent, install the characteristics of unloading so require the connection of this pillar to possess, but existing thread bush tubular type joiner can not satisfy this requirement at all, difficulty is adorned and difficulty is unloaded.Because the pillar bore is bigger, during dress, need the reinforcing of many humans pipe wrench to tighten; When unloading, again because action of rust is difficult to dismantle normal so and damage instrument.Even more serious is: because water pump power transmission dither axis when work is very big, so the also increase thereupon of the connection stress of pillar, so pillar is easy in the connection place screw thread running take place, cause line shaft and pillar to throw off at Guan Lianchu, water pump is fallen in the well.Deep well is salvaged difficulty, expense is high, if water pump is salvaged not come up, well must be scrapped.In addition, scyewed joint also can be destroyed the original working strength of pillar.Find out according to above-mentioned situation, the protective connecting device of deep well power transmission shaft at first should be able to adapt to the shake of transmission shaft, must think about again on the structure simultaneously install unload, problem such as antirust, sealing and intensity, so structural design has certain degree of difficulty, up to now, yet there are no and have ideal method and address the above problem.

The purpose of this utility model is the present situation at prior art, provides a kind of clamp band type protective connecting device, to address the above problem.

Solution of the present utility model is as follows: two pillar butt ends a positioning ring is set all, the section of positioning ring was trapezoidal after two pillars joined, positioning ring is provided with two semi-circular clips outward, and on clip, be provided with the indent draw-in groove that matches with the positioning ring profile, connected portion at two semicircle clips is provided with the relative draw-barring of annular distance, is provided with antirust clamping bolt in this draw-barring.

By above-mentioned solution as can be seen, this union coupling realizes joining pipe by semi-circular yoke configurations, two semi-circular clips are to fix by the clamping bolt that is located at its connected portion, said structure is obviously much easier than scyewed joint in installation and removal, and it is laborsaving, clamping bolt uses antirust bolt, makes the dismounting of bolt can not produce obstacle.The setting of this union coupling simultaneously can not destroy the intensity of original pillar.Yoke configurations is born bigger axial force, and the clamping bolt on the clip bears less radial force, and force structure is reasonable, has guaranteed the reliability that pillar connects, and can not produce the disengagement phenomenon.The utility model has solved the problem in the prior art more fortunately, have loading and unloading simple, laborsaving, intensity is good, the reliability advantages of higher.

Describe in detail according to embodiment below.

Fig. 1, the structure sectional view of protective connecting device.

Fig. 2, the A of Fig. 1 is to view.

Fig. 3, the structure sectional view of existing protective connecting device.

Referring to Fig. 1, the 1st, described transmission shaft pillar, it is trapezoidal that 3, two pipe ends of the affixed positioning ring of pipe end connect its positioning ring section of back, the clip 4 of band indent draw-in groove is stuck on the positioning ring.Referring to Fig. 2, clip 4 among Fig. 1 is made up of two

semi-circular clips

5,6, at the relative draw-barring 7 of all affixed a pair of annular distance in the two ends up and down of their joining places, draw-barring is provided with antirust bolt 8, by last jack panel 9, make two semicircle clips inwardly circle contract, with two pipe ends tightly compacting be docking together.Again referring to Fig. 1, because 8 bearing radial forces of clamping bolt so only need to use four bolts just can satisfy force request, have been simplified mechanical structure.Among Fig. 1,2,32 is for being located at the water pump power transmission shaft at pillar center, and 10 is bearing bracket, and 11 is bearing, and 12 is seal ring.Above-mentioned union coupling also has the advantage of good seal.

Claims

1, deep well water pump power transmission shaft protective connecting device, it is characterized in that: all be provided with a positioning ring 3 two pillar butt ends, the section of positioning ring was trapezoidal after two pillars joined, positioning ring is provided with two semi-circular clips 5,6 outward, and on clip, be provided with the indent draw-in groove that matches with the positioning ring profile, connected portion at two semi-circular clips is provided with the relative draw-barring of annular distance 7, is provided with antirust clamping bolt 8 in this draw-barring.